Attachment for graphophones



(No Model.) I

E. E. BAR'DSLEY. ATTACHMENT FOR GRAPHOPHONES.

No. 592,758. Patented NOV. 2, 189% Q/WMQM I Nrrn YATES A'rnm rrrcn.

EDWARD E. BARDSLEY, OF PHILADELPHIA, PENNSYLVANIA.

ATTACHMENT FOR GRAPHQPHONES.

SPECIFICATION forming part of Letters Patent No. 592,758, dated November 2, 1897.

Application filed March 5, 1897.

To all whmn it may concern:

Be it known that I, EDWARD ELMER BARDS- LEY, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented-certain new and useful Improvements in Shaving Attachments for Graphophones, of which the following is a specification, reference be ing had therein to the accompanying drawings.

My invention relates to that class of shaving attachments for graphophones in which the cutter-bar or shank is operated by a screw.

In previous devices the attachment is fastened to the rounded part of the carrier of the graphophone, which brings the cutter-bar of the attachment a considerable distance from the center of the carrier. To overcome this, the cutter-bar has a lug at its end to which the cutter is fastened. The regulation is effected by pushing the cutter up against the cylinder to be shaved and held in position by a setscrew, thereby not allowing very perfect adjustment, especially when the cylinder is not perfectly true.

The objects of my invention are, first, to provide a shaving attachment for graphophones in which the cutter canbe perfectly adjusted while the cylinder and carrier of the graphophone are in motion,thereby avoiding all danger of cutting too deep into the cylinder, as when regulated by pushing cutter forward by hand; second, to provide a less complicated and cheaper device; third, a device that may be left on the graphophone at all times without interfering with its action. I attain these objects as follows:

In the accompanying drawings, Figure 1 is the device as attached to the carrier of the graphophone. Fig. 2 is aside view, partly in section; Fig. 3, a sectional top view; Fig. 4, a view of the cutter with grooved and threaded shank, also end view showing groove and cutting edge; Fig. 5, the adjusting-nut.

Similar letters refer to similar parts throughout the several views.

The clutch or clamp A, forming the body of the device, has a clutch-screw B, which firmly Serial No. 626,173. (No model.)

on the threaded shank'of the cutter D. The

adjusting-nut E is prevented from moving out of position by the walls of the slot F of the clutch A.

The cutter D is kept from rotating by a groove running lengthwise along its shank,

' into which is fitted the guide screw or pin G,

as shown in Fig. 2.

In practical operation this device is attached to the carrier of the graphophone, as shown in Fig. 1. Having previously moved the cutter D back into the guide-hole O as far as possible and having placed a cylinder to be shaved on the graphophone, the cutter is then brought into position by the adjusting-nut E to shave off the desired thickness and the graphophone started, as in recording and reproducing, or the graphophone can be first started and cutter adjusted afterward, especially when the cylinder is out of true. After the cylinder is finished the cutter D can be withdrawn as far as possible from the cylinder, and the device may be left in that position without interfering with the operation of the graphophone.

Having thus described my invention, I

claim and desire to secure by Letters Pat- 

